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Correlation Studies in Tobacco ( Nicotiana Tabacum L.)

Md. Amirul Islam
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

Md. Sanaullah
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

Simple, partial and multiple correlation coefficients were studied in tobacco. Days to flower was found to have significant positive correlation with leaf yield. Significant positive correlation was also observed between leaf length and leaf breadth while both these two characters were significantly positively correlated with leaf yield and significantly negatively correlated with number of leaves per plant. Insignificant positive and negative correlation coefficients were observed between other characters also. Significant positive partial correlation coefficients were observed between leaf length and leaf breadth after eliminating the effects of days to flower. number of leaves per plant plant height and leaf yield separately, Leaf length as well as leaf breadth displayed significant positive partial correlations with leaf yield when the effects of days to flower. number of leaves per plant and plant height were not considered in any of the cases. Further leaf yield was found to have significant positive partial correlation coefficients with leaf length after eliminating the influence of leaf breath but insignificant negative partial correlation with leaf breadth when the effect of leaf length was not considered, The Multiple correlation coefficient between leaf yield and other independent characters, leaf length and leaf breadth was found to be significant and positive.

Keywords: correlation, Tobacco, Partial correlation coefficients

Location:

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Tobacco

Objectives:

Considering the importance of the crop in Bangladesh, correlation studies between some economic characters were undertaken in cigarette tobacco.

Methodology:

Nicotiana tabacum including their reciprocal F_l crosses were used as the material of the present studies, Varietal as well as hybrid seedlings were raised in seedbed and transplanted in the field in the winter of 1969. Randomized block design with three replications was followed in the experiment.. Simple correlation coefficients for all interrelationships between all these characters, partial and multiple correlation coefficients for leaf length, leaf breadth and leaf yield were calculated

Source of Information: Bangladesh J. Agril, Sci. 1 (1) : 31-34: 1974

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The significant positive correlation coefficient between days to flower and leaf yield indicated that late flowering was accompanied by an increase in leaf yield. The expression of little relationships between days to flower with number of leaves per plant, leaf length, plant height and leaf breadth indicated that late flowering would not cause marked increase or decrease in the value of these characters. The significant positive correlation between leaf length and leaf breadth was further confirmed by partial correlations after eliminating the effects of days to flower, number of leaves per plant, plant height and yield of leaf. The expression of this association indicated that increase in leaf length was accompanied by a simultaneous increase in leaf breadth.

Knowledge Management: Journal